I've had my time with this game in the past. Unfortunately it currently runs really poorly. I recommend watching the game's updates before purchasing.

What's the issue? It runs slower like it's PAL (50 MHz), but the audio is also pitched down. That can be something that's usually tolerated, but it also ticks multiple times a second like it's lagging. It natively launches in fullscreen and I've tried windowed mode with different settings.

Note this also only includes the US Genesis version (Final Zone) and the JP Mega Drive version (Axis). The X68000 version is missing and this is because of the owner not agreeing to it.

Watch this for updates and buy it after the lagging issue is fixed. I will be watching and plan on repurchasing it after (if it's possible)

A fun but EXTREMELY short game

As a lad I used to rent this game quite a bit for Sega genesis, never bought it. Once you get down your favourite weapons to equip and get the hang of how the stages flow, the game becomes incredibly easy. Graphically it still remains a solid and good looking title of its time. The music is driving in that Japanese 16-bit shooter way, and the gameplay is limited but still fun. It's a twenty ride through average, but still fun, game design elevated by presentation and atmosphere. At its current price I'd say get and relive the early days of 16-bit shooters.