ultra_sakusen_katokutai_shutsugeki_seyo!
A 1992 adventure game in the Ultra Series, developed by Banpresto for NEC's PC-98. It's an official prequel to the first TV series Ultraman (1st series). The original monsters were designed by Nishikawa Shinji.
See also
- GAME DATABASE: https://refuge.tokyo/pc9801/pc98/02158.html
- pulog1's Kaijuu Blog (Japanese): http://pulog1.exblog.jp/2959347/