ctstris
Sungjun Kim Games iPhoneiPadiPod touch
ctstris is a free Games app for iPhone and iPad by Sungjun Kim. Requires iOS 15.0. Updated October 19, 2026.
- Price
- Free
- on the App Store
- Size
- 2 MB
- Age 4+
- Updated
- Oct 19
- 2026 · v2.1
Screenshots
About ctstris
● beats ▲. ▲ beats ■. ■ beats ●. That's the only rule — and now it's a falling-block puzzle. ■ BEAT IT TO BREAK IT When your piece beats every block it lands on, it smashes them all and keeps drilling down. One tie or loss underneath and it stops right there. ■ CHAIN COMBOS Every crush in a row multiplies your score: ×2, ×3 and beyond. The landing preview shows exactly how deep you'll drill and which blocks will break. ■ EVOLVE One button turns your piece into the shape that beats it. You get half a second after touchdown to flip the matchup. ■ CLEAR LINES, SCORE A CTSTRIS! Fill a row to clear it. Clear four at once for a CTSTRIS! Lines and crushes both push you to the next level. ■ PRESSURE FROM BELOW Every few pieces, a new row of garbage rises from the bottom. The higher your level, the faster it gets. • 7 pieces, 3 shapes • Play with buttons or swipes • Haptic feedback and punchy crush effects • Best score tracking • No ads, no data collected
What’s new
Version 2.1 · Updated October 19, 2026
Game Center leaderboard is here! Compete for the best score worldwide.
Play today's Frostfire puzzle
Balance fire and ice: half of each in every row and column. A free daily puzzle from Fiplay, same board for everyone. It plays right here, no download.
App privacy
The developer, Sungjun Kim, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| ctstris | – | Free | October 19, 2026 | |
| Daily Slide Puzzle | – | Free | Aug 22, 2026 | Compare |
| PlayPlex | – | Free | Jun 4, 2024 | Compare |
| Picture Logic Puzzle Nonogram | 1.9 / 5 (17) | Free | Sep 13, 2025 | Compare |
| Tauggle | 5.0 / 5 (13) | Free | Jul 7, 2025 | Compare |
| 4D Maze | 4.7 / 5 (3) | Free | Dec 8, 2025 | Compare |
| Ball Sort Puzzle - Infinity | 4.7 / 5 (144) | Free | Jul 25, 2026 | Compare |
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