Gem Swap
Swap neighbouring gems to line up three or more, setting off cascading chain reactions.
Puzzle Emulator verified v1.0.0 18.0 KB
The JAR and JAD are the Original Java ME Version for phones and emulators. How to install.
About
A match-three puzzle with six differently shaped gems, so colours stay readable even on washed-out screens. Gems animate as they swap and fall, cascades multiply your score, invalid swaps bounce back, a hint glows if you hesitate and the board reshuffles itself when no moves remain. Play 30 Moves for strategy or 90 Seconds for speed.
Objective: Score as many points as possible within 30 moves or 90 seconds.
Modes: 30 Moves, 90 Seconds
match three puzzle gems combos



Screenshots captured from the real JAR at 176x208 on the project's reference runtime; the third image is rendered by MicroEmulator 2.0.4.
Controls
| Key | Action |
|---|---|
| 2/4/6/8 | Move cursor |
| 5 | Pick a gem |
| 2/4/6/8 (after 5) | Swap in that direction |
| 0 | Cancel |
| * | Pause menu |
In every game: 5 selects in menus, * pauses, and on the title screen # opens help and 0 toggles sound. The joystick and 2/4/6/8 are interchangeable.
Verification
| Level | Status | Details |
|---|---|---|
| Build verified | Yes | Compiled against CLDC 1.0 / MIDP 2.0; JAR + JAD generated |
| Reference runtime | Yes | Passed at 128x128, 128x160, 176x208, 176x220, 240x320 |
| Emulator verified | Yes | Automated smoke test on MicroEmulator 2.0.4 (176x220) |
| Real device verified | No | Not yet tested on real hardware |
Tried it on a real phone? Send a device report.
Technical details
| MIDlet | gemswap.GemSwapMIDlet |
|---|---|
| Platform | Java ME, CLDC 1.0, MIDP 2.0 |
| JAR size | 18.0 KB |
| Screens | 128x128, 128x160, 176x208, 176x220, 240x320 |
| Storage | RMS record store gk (settings, best score) |