Invaders Evolutions

Invaders Evolutions is a run-based, 100-level fixed-screen alien shooter in which you defend humanity from a retro-industrial invasion. Move your turret through incoming fire, open gaps in alien formations and decide when to risk shots against high-value spaceships. The campaign ends with a multi-phase battle against the Mothership, and there is no permanent power creep.

Control the arms race

Your successes, mistakes and missed opportunities can shift the war’s momentum. Letting roaming spaceships escape, losing reserve turrets or giving up control of the battlefield feeds alien development and makes later levels more dangerous. Horde milestones teach the invasion new tactics: later formations can close gaps, resurrect destroyed attackers, repair damaged units and attack from new angles. Escaped ships and failed defenses can also bring severe consequences in relevant encounters, including carpet-bombing pressure.

Research and upgrades

At key milestones, choose which technology to research rather than receiving every major tool automatically. Turret Shields absorb incoming hits and help protect your active turret from immediate destruction; Defensive Barriers reinforce cover and increase the durability of each section; and Seeker Missiles track roaming spaceships, prevent valuable escapes and become stronger through upgrades.

Between levels, spend upgrade points to adapt your turret. You can improve firepower, reload speed, bullet speed, movement, upgrade progress, turret reserves, shields, barriers and seeker missile performance. You can experiment with a build before committing, so an accidental click does not lock in an upgrade choice.

Levels and scoring

Each level ends with a performance ledger that rewards accurate shooting, spaceship hunting and fast clears. Difficulty multipliers affect your score, so surviving is only part of the challenge: strong runs also depend on research choices, resource denial and long-term upgrade planning.

The campaign has three difficulty modes. Learner offers a gentler route for practice, Normal provides the intended strategic balance, and Valhalla increases alien pressure while doubling score potential. Guardian encounters pit you against massive, durable enemies that require sustained damage, movement and learning their attack patterns.

Modes and competition

Global and country leaderboards let you pursue worldwide scores or compete asynchronously for national bragging rights. The game supports controllers across gameplay and major menus, as well as configurable keyboard profiles.

Battlefield and features

The battlefield combines fixed-screen action with glowing projectiles, dense alien formations, reinforced barriers, turret shields, seeker missile trails, Horde attacks, Guardian encounters and a final-boss battle. A tense industrial soundtrack accompanies the fights.