Pixel Invaders

About Pixel Invaders

Pixel Invaders shares a genre with a very famous game and deliberately shares almost nothing else. Where the classic template used a rectangular block descending in fixed steps, this game uses shaped formations — wedges, rings, spirals, columns, diamonds — that rotate as a body and drift on independent vectors. Reading the shape as it spawns, and understanding what threat pattern that shape produces, is the actual skill.

Each shape punishes a different position. A wedge concentrates fire at its apex, so you want to attack from the flank. A ring has no safe angle but a hollow centre, which is a genuinely viable place to be if you can get there. A spiral unwinds toward you, which means the safe position changes continuously. Five shapes cycle in a rotation that scrambles as waves progress, so you cannot simply memorise a sequence.

You have three shield blocks that absorb enemy fire and degrade visibly as they take hits. They do not regenerate. This creates the game's resource decision: shields are consumable cover, and spending them early on waves you could have out-manoeuvred means having none left when the formations get dense.

How to Play

Destroy each enemy formation before it reaches your line, using shield cover and formation-clear bonuses.

Every game on this site can be paused with P or Esc and restarted with R. Sound, retro screen effects and fullscreen are toggled from the buttons above the play area.

Game Mechanics

Rotating formations

Each formation is a rigid body of enemies that rotates around its own centre while translating downward. Rotation means an enemy's firing angle changes over time, so a position that is safe when a formation spawns may not be safe five seconds later.

Shield degradation

Three shield blocks sit between you and the formations. Each absorbs several hits, chipping away visibly. They never regenerate within a run. Using them as permanent cover is the most common beginner error.

The formation-clear bonus

Destroying every enemy in a formation before the next one spawns awards a substantial bonus and resets your fire rate to its fastest tier. Missing one straggler forfeits both, which makes sweeping a formation cleanly worth far more than the individual kills.

Scoring

Your best result is saved in this browser only. Nothing is uploaded, and there is no global leaderboard — see the storage policy for exactly what is kept.

Tips & Strategy

• Identify the shape on spawn. Each of the five formations has a position that punishes it least. Recognising the shape immediately is worth more than fast shooting.
• Do not hide behind shields. They are consumable. Use them for emergencies, not as your default position.
• Clear stragglers first. The formation-clear bonus is large and requires every enemy. Leaving one alive on the far side costs more than it saves.
• Attack rings from inside. The hollow centre of a ring formation has no line of fire onto it. Getting there is difficult and worth it.

Common Mistakes

• Camping under a shield. It works for one wave and leaves you with nothing for the next five.
• Chasing the nearest enemy. Formations rotate. The nearest enemy in three seconds is a different one, and shooting at the current nearest wastes shots on a moving target.
• Ignoring the formation-clear bonus. It is worth more than the entire formation's individual kill value at higher waves.

Features

• Five original formation shapes with distinct threat patterns
• Formations rotate as rigid bodies while descending
• Three destructible, non-regenerating shield blocks
• Formation-clear bonus with a fire-rate reward
• Escalating formation size and descent speed
• Local best score and best wave reached