
Super Depth (PC-98)
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Super Depth (PC-98) (1991)
Bio 100 %


Super Depth is a freeware shoot-’em-up created by the dōjin circle Bio 100 % and published for the NEC PC-9801 on 10 August 1991. The player captains the self-proclaimed “Ultimate Hyper Battleship” Yamaboku through three looping sets of four fields—Sea, Air, Space and Boss—each with its own control quirks. In the sea phase you steam left-and-right and drop depth-charges on submarines shown on a sonar strip; in the air and space phases your guns shoot forward, and the final arena pits you against a huge carrier craft. Power-ups boost both you and the enemy’s aggression, giving the game its escalating intensity. The title won the 1st Free Software Grand Prize (Amusement Division) and circulated widely on a single FDI image before Bio 100 % re-issued an authentic Flash/Android port in 2011. A more traditional sequel, Super Depth 2 Finalty, followed in 1995.
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Cloud saves, then browser saves, are selected first. Choose Continue game to use your latest progress here. Loading a save returns to that saved point.
You can also keep a backup using the buttons above the game:
Backups only change when you save again. Wait for saving or downloading to finish before closing the page.
Clearing this site's data can remove your progress and browser saves. Keep important saves in the cloud or download a backup.
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