The first time I played the Alpha 1 Trilogy was as part of a compilation megaWAD by Legacy engine advocate Jive. It greatly impressed me back then and that level of awe still carries through to this day. Rob Schweiner authored the three parts of ALPHA1 at different times, but uploaded a .ZIP package of the three separate WADs (ALPHA1, OOZI, and SOURCE as MAP01, MAP02 and MAP03) as early as '97. The current version has a few edits dating to '98, but it's all vanilla compatible, with Schweiner lamenting the infamous visplane limit in the author notes. The story is familiar, but welcome. There's an alien (re: demon) outbreak at the Alpha 1 base, and you're sent in to clear it out and eliminate the source.
If I had to compare the Alpha 1 Trilogy to anything, it would be striking a balance between the labyrinthine, abstract techbases of Rick Lipsey and the more polished but no less exploratory levels from Russian authors like Lainos. The Alpha 1 Trilogy levels are Eternal Doom big, and pushing between 300 and 400 monsters. They're mostly little guys but they're used in a way that makes them feel dangerous when you're not fighting the bruisers. The maps are pretty non-linear as I understand it, with progression gates tied to keys. The route you want to take in order to explore each level is up to you. If you hate switch hunts, then you'll find some solace in Schweiner's gameplay, where the effects of buttons are usually straightforward.







