Launched this week
Tetr99 — The Free Tetris 99 Trainer
Practice the part Tetris 99 never lets you skip.
5 followers
Practice the part Tetris 99 never lets you skip.
5 followers
Tetr99 drops you straight into late-game Tetris 99 pressure — garbage spikes, speed ramps, targeting chaos — without the 80-player queue. Adjust attack intensity and speed, drill your weak spots, and close the tab when you're done. Free, offline-ready, runs in any browser. No account, no install, and no ads.
Hey everyone — maker here 👋
I started building this because I kept hitting the same wall in Tetris 99 — I'd make top 5 and then completely fall apart once the garbage started flying and the speed ramped up. There was no way to practice that specific high-pressure situation without grinding through 80 players just to reach it.
So, I built Tetr99 to lets us jump straight into that high pressure from second one.
What is Tetr99
A browser-based trainer inspired by the intensity of Tetris 99, designed to help you practice the hard parts in peace. Open it in Chrome, go offline if you want, and drill the mechanics that translate directly into real match performance.
Tetr99 is a single HTML file. No framework, no build step, no server. The 8-bit music you hear isn't a file being streamed — it's math. Frequencies calculated and played live by the Web Audio API, right in your browser tab. You can download the file, go fully offline, and it still works.
No accounts. No downloads. No matchmaking queue. Just you, adjustable CPU pressure, and a clean environment to improve.
Key Features
⚡ 3 Speed Modes — ×1 Normal · ×2 Fast · ×3 Insane. Ramp up to simulate top-10 speed without needing to survive to top 10 first.
🎯 4 Attack Intensities — Off · Low · Medium · High. Dial in the garbage-spike pressure that matches your current weak point.
👻 Ghost Piece + 4-Piece Preview — Standard competitive feature set, no shortcuts removed.
🤝 Hold Mechanic — Practice the hold decisions that matter in high-speed situations.
📋 Live Attack Log — See garbage sent and received in real time, so you understand the economy of each clear.
🔊 Retro 8-bit Audio — Procedurally generated BGM and SFX via Web Audio API. No files, works fully offline.
A few things I'd genuinely love feedback on:
Is ×3 Insane actually useful, or just punishing? Should there be a ×1.5 in between?
Would a "survival time" stat on the game over screen be more motivating than score?
Any practice modes you wish existed — timed sprints, garbage-only drills, combo chains?
I'm actively developing this and will be reading every comment. Thanks for checking it out 🙏
🎮 Play it here
MyHabbit
I simply love tetris! This combined without any ads and no account etc is amazing!
@mark_heijnekamp Thank you very much. I'm glad you enjoy the game.