Mach 3 (1987) is a classic semi-3D shooter by Loriciels. The action is very smooth and fast, and overall it's a very polished CGA game that manages to overcome many hardware limitations. In the PC conversion the tune is played through the PC speaker, so the game should be played in real DOS mode.
StarGlider (1987) is a legendary wireframe 3D action shooter developed by Argonaut Software and Realtime Games. One of the first of its kind ever. Your goal on each level is to find Starglider one, a golden, bird-like craft with animated wings, then destroy it. With revolutionary spaceflight dynamics and a long list of innovative features, StarGlider ranks as one of the most underrated space sims of all time.
StarGlider 2 (1989) is not just a shoot 'em up space sim like its predecessor Starglider. The graphics are no longer just wire-frames but solid filled objects and there are plenty of things to explore. The game has adventure elements in terms of "quests" you can solve that will provide you with new weapons and goodies when you complete them. It may not have the same level of depth in diplomacy, adventure, and economics that Elite does, but its spaceflight model and sheer addictiveness are second to none. Imho one of the coolest space sims here.
Elite (1987) is THE space trading video game. The game's title derives from one of the player's goals of raising their combat rating to the heights of "Elite". It was one of the first home computer games to use 3D graphics, thus establishing a new standard in the genre. Precursor to Elite Plus, it shows what was possible in early DOS ages with limited graphics, performance and data storage options.
Star Wars (1989) is a first-person shooter (FPS)nand the first PC game ever based on the blockbuster series of the same name. The game puts you in the role of Luke Skywalker, in the X-Wing cockpit, fighting wave after wave of the Empire's TIE Fighters in a dramatic space drama that culminates in the attack on the Death Star itself. The furious, non-stop action and good controls make up for the wireframe-only graphics. Star Wars still stands up well years later with modern shooters in terms of pure mindless fun.
Xenon 2: Megablast (1990) is a SHMUP (Shoot 'm up) masterpiece. Piloting the "Megablaster" ship, your mission is to survive five levels, blasting hundreds of aliens in the process. Xenon 2 introduces significant innovations to the genre; the graphics are superb throughout. Definitely one of the best-looking and most fun SHMUP in PC gaming history, and a must-have for every shooter fan. For invulnerability press F7 in the graphics selection and "I" during game :)
Elite Plus (1991) is an excellent VGA update of the classic Elite from 1987, and is now commonly regarded as the best version. It's open-ended game model and revolutionary 3D graphics earned it a place as a genre maker in gaming history. It provides special missions, excellent sounds, smooth animation and intensive combat. Inputs for keyboard or mouse are all supported, and can be customized by the player.