Skyraine

Skyraine is an action platform and missile-defence game set on an alien planet. Stranded among the ruins of an extinct civilisation, you rely on an ancient turret to defend your base from an invasion. Between enemy waves, you repair the base and collect supplies and power-ups. New enemies with their own weapons arrive as the game progresses; later difficulties require careful strategy as well as aim and precision.

Defend the base

Your turret sits among ancient ruins, with a shield generator and a few rusted girders and ladders forming the base. You can expand it above and below ground with collected girders and ladders. Enemies target different parts of your defences: Mech Dogs break through girders and ladders to reach shield generators, while spiders steal supplies and corrosive bugs eat girders, ladders and shields.

Supply ships arrive when the music changes, dropping crates for you to collect and use to repair the base. Batteries fully restore the shield and repair the shield generator. You can also place mines on the ground or send them into the air, set up autoguns with limited ammunition to shoot enemies such as spiders, and combine a Zappy with a mine as a Zappy mine.

Weapons and power-ups

You have unlimited basic ammunition, while other power-ups offer different ways to attack:

• Shotguns: fire about 20 bullets at once, but have limited range.
• Discblades: versatile ammunition that can shoot through almost anything.
• Vortexes: destroy anything caught in their void, so they are dangerous to fire near you.
• Zappy's: hit one enemy and chain to nearby enemies; they drop rarely.

Enemy forces

The invading forces include bombers, which attack you; suicide ships, whose explosions are their main threat; and shield ships, heavily armoured low-flying enemies that draw attention while their allies attack the base. Transports have light armour, but drop corrosive bugs that feed on the base. Spiders catch supplies and can emerge near the surface, while Suckerships create a whirlwind that drains your life and takes anything caught in it.

Mech Dogs push through girders and ladders toward shield generators, and mines are the only way to stop them. Soldiers pour out of crates and pile up against the base until they find a way inside. Scorpions also appear among the enemies.

Local multiplayer

You can play locally with up to three other players and face four exponentially challenging difficulties.