About iptsi Echo
iptsi Echo is a memory game played on four pads. The game lights them up in a sequence, one at a time and each with its own note, and then hands control to you. Repeat the order exactly and the next round adds one more step. Get it wrong and you lose a life and the same sequence is played again from the start, so a single lapse is recoverable but a shaky memory is not.
The whole game rests on a limit everyone has: how much of a sequence you can hold at once. There is no time pressure during your turn, which means the difficulty is purely the length of the sequence and how well you can chunk it. That is also the strategy worth knowing — four steps remembered as two pairs is much easier than four steps remembered as four things.
How to play
- Watch the sequence. Each step is a pad with its own pitch, so you can lean on sound as well as sight.
- When the pads stop, tap them back in the same order.
- A correct run scores, and the next round is one step longer.
- A wrong tap costs a life and replays the sequence; three wrong taps ends the run.
How it was built
The pads, the flashes and the glow are drawn at runtime on one canvas, and the four notes are generated with the Web Audio API rather than loaded as audio files. That keeps the game a single HTML file with no dependencies, which is what lets it run offline and inside a sandboxed host such as YouTube Playables.
The playback pauses are set by time rather than by animation frames, so a sequence sounds and looks the same on a fast phone and a slow one. On a game that is entirely about timing and memory, that consistency is the difference between fair and unfair.
Why it is free
iptsi builds these titles in-house and owns them outright, so nothing here is licensed or resold. They are here to be played, and to show the kind of game that fits the open web: no install, no account, no waiting, and no advertising on this page. Your best round is stored in your own browser and is never uploaded anywhere.