Alfa System is a less known Japanese developer that has been active from 1988 to this day. Alfa System famously ported Street Fighter as a launch title for the PC Engine CD in 1988, making it the first CD-ROM game ever released. They also made the great shooter Cyber Core for the PC Engine, as well as the fun foul-mouthed cyberpunk shooter 'Down Load', and the R-type-inspired 'Sinistron'.
Cyber Core
PC Engine 1990@2586
Sinistron (PC Engine)
Cyber Core (PC Engine)
Down Load (PC Engine)
ocdgamer.rb:381:output_game_list( 5 games, mode:largescreen, tag id:737, sortby:system, url_arg_prefix:, output_list_selection:true) output_large_game_box(2866) output_large_game_box(2586) output_large_game_box(2878) ... execution time: output_game_list: 0.03s