It seems SNK Playmore have stopped porting old Neo Geo games to iOS long enough to make a their very own Metal Slug game.
Metal Slug Defense leverages the classic 2D sprites and backdrops from the shooter franchise to create its universe. You'll be able to unlock 60 units over the course of the game, and face-off against opponents in over 100 different locations.
Tapping on character icons cause those troop to spawn from your base and advance towards the enemy stronghold in a manner that will be familiar to anyone who has played a tower defence game.
Free-to-play elements allows you use in-app purchases to power-up your base and troops, so you can expect to be investing cash at some point if you want to be competitive online.
It may be a simple tower defence game, but the familiar Metal Slug sprites have made us a little curious. If you suffer from similar sprite based nostalgia, then Metal Slug Defence is free to download from the App Store now.