Metal Slug 4 features:
- Take the battle to the air, sea and land as you once again battle Morden's forces
- Six challenging stages and a wide array of unique enemies
- Famous non-stop, fast paced MEATL SLUG action
- Play as returning favorite characters Marco and Fio or brand new characters Trevor and Nadia
- Extensive power-ups of over-the-top weaponry, health and ammo
- Fight off huge boss characters on each level and battle massive end bosses
Metal Slug 5 features:
- Five massive stages and all new enemies
- Take up arms against this ultimate weapon of destruction "The Doomsday Machine" that fuses the mysterious power of ancient ruins with that of Metal Slug science
- Wage an assault on the enemy's underwater stronghold.
- Find a factory producing robotic weapons developed from the Government Army's data for next-generation Metal Slugs.