

Welltris is a puzzle video game created by Doka and published by Bullet-Proof Software. Sphere, Inc. produced adaptations for Spectrum Holobyte and Infogrames. The game was first launched on DOS and Macintosh in 1989. Later versions were released for the Amiga and Atari ST in 1990, and for the ZX Spectrum and Commodore 64 in 1991.
| Arcade | TBD |
| ACPC | TBD |
| DOS | December 31, 1989 |
| Amiga | December 31, 1990 |