OpenTyrian 2000

Tyrian was released in 1995 by Eclipse Software and published by Epic MegaGames — a vertical scrolling shooter with pixel art by Daniel Cook and a reputation that long outlasted the shareware era it came from. Tyrian 2000 followed in 1999, adding a fifth episode and more ships. In 2004 the copyright holders released the game data as freeware, and in 2007 the original Turbo Pascal source was ported to C as OpenTyrian, which is what runs here.

On the surface it is a shmup: you fly up the screen, enemies come down it, and there is a great deal to dodge. The levels are unusually varied for the genre — asteroid fields, cities, boss corridors, sequences that change scroll speed — and the difficulty options are broad enough that it works both as a relaxed run and as something genuinely punishing.

Underneath is the part people remember. Every credit earned in a level is spent between levels on a shop screen with real decisions in it. Ships differ in speed and armour. Front and rear guns level up individually, and each level costs more than the last. Sidekicks fly alongside you with their own behaviours. A shield recharges, armour does not, and the generator you install caps how much energy the whole loadout can draw. Overcommitting to a weapon you cannot power is a mistake you make exactly once.

The game is arranged into episodes with a story told through briefing text and a hidden data cube archive, plus arcade and two-player modes. OpenTyrian itself is a faithful port rather than a remake: it plays the original game, at modern resolutions, on modern operating systems, and it bundles the freely redistributable Tyrian 2000 data so there is nothing to source separately.

It is here because it is one of the cleanest preservation stories in this catalog — a commercial game whose owners freed the data, a community that ported the code, and a result that is not an emulator wrapper but a maintained native build of a game from 1995 that you can install and play in about a minute.