📜 CHAIN LETTER : INDIE BOOST LAB ON STOVE

25/01/2026

[Notice] [Chain Letter] INDIE BOOST LAB Feedback & Event Guide (Jan 26 – Feb 8) [100]

Hello! This is Chain Letter, participating in INDIE BOOST LAB. Chain Letter is a grid-based roguelite defense game, and we joined this event to gather feedback—especially on difficulty balance and how fun the controls feel. We’d love your interest and participation! Event Period Jan 26, 2026 ~ Feb 8, 2026 1) User Feedback Participation 안내 Help us make Chain Letter even more fun by leaving your feedback! To better identify the game’s strengths and weaknesses, please play for at least 30 minutes before submitting your feedback. How to Participate ① Leave a comment on this post to join! (Example: “I’m participating!”) ② Play the Chain Letter demo, then write a one-line review on the store page. Store link: https://store.onstove.com/ko/games/101725 Please focus on feedback about the game—what you liked most, and/or what felt lacking. After closing the game client, write your review and make sure your playtime is properly reflected. (Playtime is counted based on the data at the time you sub

24/01/2026

+4

[Notice] [체인레터] 게임 소개 [1]

안녕하세요, 체인레터를 개발중인 자리끼 스튜디오의 무구구입니다. 이번에 드디어 INDIE BOOST LAB에 참여하게 되어 이렇게 인사드립니다!😆 소개해드릴 체인레터는 ‘손맛’에 중점을 둔 그리드 기반 로그라이트 디펜스 게임입니다. 고정된 그리드 안에서 몰려오는 악마들을 막아내며, 친구스킬을 조합하여 스테이지를 클리어해 나가는 로그라이트 방식의 게임입니다. 배경 스토리 평범한 일상을 살아가던 주인공 '몽실'. 어느 날 몽실은 미스터리한 사건에 휘말렸고 그 이후 아주 오랜 시간, 반복되는 세계를 끝없이 순환하고 있습니다. 플레이어는 어느 한 순간의 몽실이 되어 이 순환을 끝내야 합니다. 어떻게 해야 이 순환은 진정한 끝을 맺을 수 있을까요? 이 반복되는 지옥에서 핵심이 되는 것은 마법의 편지입니다. 편지는 저주로 봉인된 친구들을 해방하거나, 스킬을 강화하는 데 사용됩니다. 플레이어는 해금한 친구들을 친구 스킬로서 함께 하며 지옥을 다스리는 네 악마들을 물리치고 끝을 향해 나아가야 합니다. 몽실은 언젠가 이 세계에서 진정한 탈출을 할 수 있을까요? 게임 플레이 친구들을 '앨범'에서 고른 뒤 스킬로서 착용합니다. 스테이지를 선택하고 전투에 돌입합니다. 친구의 스킬은 키 커맨드를 입력하여 사용하게 됩니다. 점차 익숙해지는 조작 + 강화를 통해 스테이지를 클리어해 나갑니다. 데모버전에서는 2스테이지까지 진행하실 수 있습니다. 예상 플레이타임은 1시간-2시간(컨트롤 실력에 따라 변동)입니다. 현재도 데모 플레이는 가능하며, 인디부스트랩은 1월 26일부터 시작되니 많은 관심 부탁드립니다. 감사합니다! 🥰

22/02/2026

[Notice] [체인레터] 인디 부스트 랩 참여 소감 및 피드백 & 이벤트 당첨자 발표 공지 [4]

안녕하세요, 체인레터의 개발자 무구구입니다. 먼저 체인레터를 플레이 해 주신 모든 분께 감사의 말씀드립니다 :) 1인 개발로 진행되는 게임이었기에 부족한 점이 참 많은 게임이었음에도 진득하게 플레이 해 주시고 또 멋진 피드백을 한가득 남겨주셔서 깊은 감명을 받았습니다. 푹 빠지게 재미있었다, 어려워서 죽을 것만 같았다, 정신없다 등등 수 많은 피드백 덕분에 이 게임의 부족한 점이 무엇인가 크게 느낄 수 있었던 INDIE BOOST LAB이었습니다. 이번 테스트에서 받은 다양한 피드백을 기반으로, 향후 개발에서 좀 더 보편화되고 유저 친화적인 컨트롤을 가진, 그러면서도 명확한 인디 게임만의 개성을 담은 보완된 게임을 유저 앞에 선보이도록 하겠습니다! 체인레터 INDIE BOOST LAB에 참여해 정성껏 피드백을 주신 모든 분들께 다시 한 번 감사의 말씀드립니다! [피드백 반영] 반영 완료 : UI 개선, 볼륨관련 오류 개선 반영 예정 : 난이도 개선, 밸런스 개선, 스킬시스템 관련 개선, 조작키 관련 개선 [당첨자 발표] 피드백 당첨자 번호 구분 스토브 닉네임 보상 - 기본 피드백 참여 참여자 전체 네이버페이 포인트 5,000원 1 베스트 피드백 선정 Sojeob 네이버페이 포인트 5,000원 추가지급 2 혼돈악 3 ANYGUARD 4 민트참새 5 grim1 이벤트 당첨자 번호 이벤트 명 스토브 닉네임 보상 1 너무 쉬운데 덤비면문다고 네이버페이 포인트 10,000원 2 민트참새 3 너무 어려워 광란의 휴전선 네이버페이 포인트 5,000원 4 최강포차 5 키스_3 6 Sojeob 7 혼돈악 8 문가경 당첨되신 모든 분들 축하드립니다! [앞으로의 계획 및 마무리] 체인레터의 예정된 출시는 올해 2분기 중 이었으나, 향후 계획은 게임 방향에 대한 변경점이 다소 많을 것으로 예상되어 추후 별도의 공지를 통해 전달을 해 드릴 예정입니다. 앞으로 더욱 좋은 게임을 만들어 여러분 앞에 선보이도록 하겠습니다. 참여해주시고 응원해주신 모든분들께 감사드립니다!

08/02/2026

+1

[TooEasy] Impressions after completing the game!

It took me exactly 1 hour to complete it!I was really excited from the start of the game, and the graphics are so great, it would be even more fun to play on a big TV!The friend enhancement system, my own letter enhancement, and the gambling system at the camp were really fun and pumped me with dopamine ㅋㅋㅋㅋI definitely felt that physical skill was needed because pressing the friend command really requires you to press it quickly, so I felt it was difficult, but I felt great fun when I succeeded in the command and knocked down the enemies.It's really, really fun, but there's just one thing I'm sad aboutJupiter <<<It's a shame that in the demo, you could just use this core character and it would be fine. You'll buff the other friends as much as Jupiter, right!?!????

08/02/2026

[TooHard] Definitely, the sections that were frequently blocked were...

I think it's all boss battles. In normal stages, I feel like, 'Is it blockable?' but when I go to boss battles, there are so many mobs that I feel like, 'Wow, this isn't easy,' so defense was very difficult.

08/02/2026

+1

[TooEasy] This time, it's a stage where you often get stuck while playing.

Right before the boss, a stage where only slime-like monsters appear!I failed the first time and wondered if I lacked skill, so I immediately reset the data and challenged it for the second time, but failed! After that, I thought, 'Let's just proceed,' conquered the stage 2 boss, and thought that if it's me who has suffered hardships until now, it's possible, so I reset the data and tried again for the third time.The result...Yes, I failed.At first, I thought I chose my friends well, chose the options well after clearing the stage, and thought my skill had improved, but I couldn't clear it. The slimes' health is too high, so the quantity keeps piling up... I chose Jupi and Lettuce as friends, and I ran the cooldowns tightly.Developer, if you're watching, please answer if you made this stage so that it's bound to fail!!!

08/02/2026

[TooEasy] Cleared it.

It was fun. The hand feel is perfect.I thought there would inevitably be boring parts because it's a defense genre, but it overcame that limitation. It would have been boring if I simply used skills every cooldown, but there was a barrier that required entering a command to use the skill.As skills (friends) gradually increase and cooldowns decrease, physical ability is slowly required. If there is a mistake in using skills, dps will decrease and you will not be able to defend. So, the brain has to memorize all the skill commands, the eyes have to pay attention to the cooldown, and the fingers have to perform the input.I really, really liked the feeling that my skills were improving while playing the game.To exaggerate a bit, I think it could be a revolutionary way to play in the defense genre.I also wrote a review on the store like this.

08/02/2026

+3

[TooEasy] Honestly, it's difficult.

I'm too busy calling friends and dodging missiles.I cleared it, but honestly, it's too difficult.Upgrading is the answer.

08/02/2026

[TooHard] The first stage boss is difficult!

I think if too many mobs rush in at once, I get flustered while entering commands.

08/02/2026

[TooHard] It's too difficult.

I somehow made it to the first boss, but it was too difficult.It was too hard to input commands and dodge missiles.It's hard to collect gold or letters in the early stages, and I feel lost.I can only see the answer in diligently retrying and silently upgrading.

08/02/2026

+1

[TooHard] This game is very difficult for people with slow hands.

It wasn't easy to get past a stage where so many enemies were coming.I'm not very fast with my hands, and I use the eagle-finger typing method, so the fast tempo of the game made it feel even more difficult.This isn't just a rhythm game where you cut them off before they cross the line, and if they cross it, your life is reduced,Because you have to avoid the enemies' projectiles and never die, the fatigue was more than I expected.

08/02/2026

[TooEasy] Cleared it

At first, it was chaotic and difficult, but as I increased my stamina, unlocked friends, and strengthened myself, it felt rewarding and fun to clear the parts I was stuck on and grow~

08/02/2026

+2

[TooEasy] It was fun.

It was a game where your hands were really busy. I practically gave up on normal attacks and movement and focused only on skills to clear it.So it felt a bit difficult, but looking back, I think the difficulty was appropriate. What I'm most looking forward to now is the story. It seems like there's a secret hidden, so I'm looking forward to it hehe.

08/02/2026

+2

[TooHard] When the game is blocked

There are times when I feel like the game is blocked, one is at the midpoint of each stage, and the other is at the boss battle.In the case of the midpoint, I got stuck in the process of getting used to the game in stage 1, and I got stuck for a while in stage 2 because I felt a sudden increase in difficulty.And the boss is difficult, so I never cleared it in one go.

08/02/2026

[TooHard] It's so hard

The really, really difficult part is right away~ the first boss fight..!!I don't think it's a round that you're supposed to beat on your first try!!If there is anyone who beat it on their first try, they are either hardcore players or sold their soul to the devil,,!Anyway, after failing twice, I'm afraid to try it again ㄷㄷ

07/02/2026

[TooHard] The section that I feel is getting difficult

I often got stuck in the mid-stage 2 section. The amount of enemies and the density of bullet curtains increase significantly, and since I don't have enough firepower to quickly clear the enemies, the screen quickly becomes saturated.In addition, I have to process QTE input at the same time when using skills, so I often have to pay attention to evasion, position adjustment, and skill activation at once, and in the process, I accumulate hits and it was difficult to pass the stage.If you upgrade a little, the difficulty drops significantly, but based on the beginning, I felt that the perceived difficulty increases rapidly when the specs are insufficient.

07/02/2026

[TooEasy] Feels like it relies heavily on friend upgrades

When the specs were insufficient, I got the impression that the difficulty was quite high because I had to handle QTEs at the same time. But when friend upgrades were at a certain level, I could easily push through by purely focusing on QTEs. It felt more like pushing through with specs rather than being deliciously easy, which made it feel a bit disappointing.

07/02/2026

+1

[TooEasy] Orange class friends tear the boss apart

With new classmates, even the stage 2 boss can be cut, even if it takes a while!If you pick damage reduction, shield, health, and ally cooldown reduction, you'll be strongI was curious if those noises were all friends from the same school. It was a demo endingI was wondering if the challenge difficulty was set after completing the main story, but I couldn't even clear the line, so I almost broke my fingers and ran away..I'm looking forward to the main story!

07/02/2026

[TooHard] Too difficult with basic class friends

Since the placement of rare monsters determines the difficulty of the game, the roguelike element in progressing through the map has little effect because there are few difficulty options,Rare, Rare, Elite, Elite / Rare, Rare, Elite, Elite, Boss. If you don't have a proper party composition every time these appear, you'll immediately feel the wall...It's very difficult when the monster allocation for the stage 2 boss battle is terrible.

07/02/2026

[TooHard] Too difficult..

I somehow managed to clear stage 1, but I've died here so many times ㅠ I guess it's because my health is still low and I haven't upgraded my friends yet, it's too difficult..

07/02/2026

+2

[TooEasy] Participating in the clear event

You can strengthen the main character and friends through repeated playBecause the sense of growth is excellent, I was able to clear it smoothly on the 8th try.I cleared it with a combination of long-range homing missile friend + close-range processing range friend + stun friend and slow friend.Homing missile friend and stun friend are so good that I wrote all the letters focusing on these friends lol

07/02/2026

+2

[TooEasy] It's getting easier as I bring more friends.

Playing with the initial 2 friends, I couldn't see any chance of clearing the stage 2 boss with that setup.I only upgraded the permanent grade by about 1 level, and played by collecting letters to unlock friends.I guess friends were the answer. I didn't even upgrade the friends, but they are so powerful that I can easily clear the stage 2 boss.I like the feeling of being secure when you get friends!I had fun playing it.

07/02/2026

+1

[TooHard] The reason it was difficult..

When there was only 1 left...And then I immediately died...There were no upgrades, and I couldn't win with the firepower of the first two friends I gotSo I worked hard to get friends...Looking for friends to play with..

07/02/2026

[TooEasy] Too easy..?

When I first started the game, I kept dying at the stage 1 boss and struggled, but after unlocking friends and raising my stats, it became easier. Of course, as the number of friends increased, there were more commands to input, so I got busier as a bonus..

INDIE BOOST LAB New Reward & Penalty Rules (Jul 22, 2026 ~) [11]

Notice of Changes to the INDIE BOOST LAB Operation Policy (January 12, 2026~) [8]

[Notice] Important Notes for Writing Surveys & Store Reviews for <CHAIN LETTER>

[Notice] [Chain Letter] INDIE BOOST LAB Feedback & Event Guide (Jan 26 – Feb 8) [100]

[Notice] [체인레터] 게임 소개 [1]

[Notice] [체인레터] 인디 부스트 랩 참여 소감 및 피드백 & 이벤트 당첨자 발표 공지 [4]

[TooEasy] Impressions after completing the game!

[TooHard] Definitely, the sections that were frequently blocked were...

[TooEasy] This time, it's a stage where you often get stuck while playing.

[TooEasy] Cleared it.

[TooEasy] Honestly, it's difficult.

[TooHard] The first stage boss is difficult!

[TooHard] It's too difficult.

[TooHard] This game is very difficult for people with slow hands.

[TooEasy] Cleared it

[TooEasy] It was fun.

[TooHard] When the game is blocked

[TooHard] It's so hard

[TooHard] The section that I feel is getting difficult

[TooEasy] Feels like it relies heavily on friend upgrades

[TooEasy] Orange class friends tear the boss apart

[TooHard] Too difficult with basic class friends

[TooHard] Too difficult..

[TooEasy] Participating in the clear event

[TooEasy] It's getting easier as I bring more friends.

[TooHard] The reason it was difficult..

[TooEasy] Too easy..?

INDIE BOOST LAB New Reward & Penalty Rules (Jul 22, 2026 ~) [11] 이미지

Notice of Changes to the INDIE BOOST LAB Operation Policy (January 12, 2026~) [8] 이미지

[Notice] Important Notes for Writing Surveys & Store Reviews for <CHAIN LETTER>

[Notice] [Chain Letter] INDIE BOOST LAB Feedback & Event Guide (Jan 26 – Feb 8) [100] 이미지

[Notice] [체인레터] 게임 소개 [1] 이미지

[Notice] [체인레터] 인디 부스트 랩 참여 소감 및 피드백 & 이벤트 당첨자 발표 공지 [4] 이미지

[TooEasy] Impressions after completing the game! 이미지

[TooHard] Definitely, the sections that were frequently blocked were... 이미지

[TooEasy] This time, it's a stage where you often get stuck while playing. 이미지

[TooEasy] Cleared it. 이미지

[TooEasy] Honestly, it's difficult. 이미지

[TooHard] The first stage boss is difficult! 이미지

[TooHard] It's too difficult. 이미지

[TooHard] This game is very difficult for people with slow hands. 이미지

[TooEasy] Cleared it 이미지

[TooEasy] It was fun. 이미지

[TooHard] When the game is blocked 이미지

[TooHard] It's so hard 이미지

[TooHard] The section that I feel is getting difficult

[TooEasy] Feels like it relies heavily on friend upgrades 이미지

[TooEasy] Orange class friends tear the boss apart 이미지

[TooHard] Too difficult with basic class friends 이미지

[TooHard] Too difficult.. 이미지

[TooEasy] Participating in the clear event 동영상 이미지

[TooEasy] It's getting easier as I bring more friends. 이미지

[TooHard] The reason it was difficult.. 이미지

[TooEasy] Too easy..? 이미지

INDIE BOOST LAB New Reward & Penalty Rules (Jul 22, 2026 ~) [11]

Notice of Changes to the INDIE BOOST LAB Operation Policy (January 12, 2026~) [8]

[Notice] [Chain Letter] INDIE BOOST LAB Feedback & Event Guide (Jan 26 – Feb 8) [100]

[Notice] [체인레터] 게임 소개 [1]

[Notice] [체인레터] 인디 부스트 랩 참여 소감 및 피드백 & 이벤트 당첨자 발표 공지 [4]

[TooEasy] Impressions after completing the game!

[TooHard] Definitely, the sections that were frequently blocked were...

[TooEasy] This time, it's a stage where you often get stuck while playing.

[TooEasy] Cleared it.

[TooEasy] Honestly, it's difficult.

[TooHard] The first stage boss is difficult!

[TooHard] It's too difficult.

[TooHard] This game is very difficult for people with slow hands.

[TooEasy] Cleared it

[TooEasy] It was fun.

[TooHard] When the game is blocked

[TooHard] It's so hard

[TooEasy] Feels like it relies heavily on friend upgrades

[TooEasy] Orange class friends tear the boss apart

[TooHard] Too difficult with basic class friends

[TooHard] Too difficult..

[TooEasy] Participating in the clear event

[TooEasy] It's getting easier as I bring more friends.

[TooHard] The reason it was difficult..

[TooEasy] Too easy..?