Chocolate Doom is a Doom source port which aims to behave as closely as possible to the original DOS Doom executables ("Vanilla Doom"). It aims to be compatible with DOS Doom demos, configuration files, savegames, and bugs. As far as possible, it provides the same features that are available in the DOS version, along with the same "feel" of the original game.
Project shyknight is a classic-style platforms game like Manic Miner and some others from early 80s. It has very nice and polished, colorful retro graphics, and simple but addictive gameplay. Eric is in love with a greedy girl named Martina. He must collect all the items she wants to make her happy.
PC-BASIC is an interpreter for GW-BASIC files. It can run and convert between ASCII, bytecode, and "protected" (encrypted) .BAS files. It implements floating-point arithmetic in the Microsoft Binary Format (MBF) and can therefore read and write binary data files created by GW-BASIC.