Aqua Populo

Aqua Populo is a submarine game where you pilot your sub through waves of hostile sea life and fight bosses. It has Normal and Timer modes, four difficulties and four leaderboards.

Game modes

In Normal Mode, you descend through 100 waves and face 10 bosses. Enemy spawn points and bonuses are randomized on each run. Completing Normal Mode unlocks Survival difficulty, which removes 1-Up bonuses from standard enemies and has dedicated leaderboards.

Timer Mode has endless waves, with bosses triggered by a timer rather than by wave count. As you descend, bosses appear more often and have more HP.

Bonuses

Ten bonuses can change your sub’s weapons or provide other advantages:

• Shield: protect your sub for a limited time.
• Mines: clear the area with a ring of explosives.
• Boost: temporarily increase your sub’s speed.
• Spread: split torpedoes into smaller projectiles.
• Triplets: fire three torpedoes at once.
• Pulse: fire a wide pulse beam.
• Axial: fire torpedoes in four directions.
• IR-Beam: fire a fast beam forward.
• Homing: fire two extra homing torpedoes.
• 1-UP: unlock an extra sub.

Difficulty settings

The four difficulties change boss HP, bullet speed, starting lives and, in some cases, bonuses:

• Easy: lowest boss HP, warnings for spawn points, slowest bullet speed and five starting lives.
• Normal: default boss HP and bullet speed, with three starting lives.
• Hard: higher boss HP, fast bullet speed and one starting life.
• Survival: highest boss HP, fastest bullet speed and one starting life; 1-Up bonuses drop only from bosses.