Tiles

Tiles is a Shanghai clone (according to the author, it is based on GunShy for the Mac). You must eliminate all tiles on the screen by marking pairs, but only tiles which are free to the left or right can be marked. Unlike other Shanghai variants, the tiles are not traditional mahjongg tiles, but pictogrammes resembling computer icons. The program is totally multitasking-friendly and comes with source code in TDI Modula-2.