Your goal is to remove all blocks from the board. Clicking on a center of given block-pattern - reverses all it's fields. So empty ones become full... and full ones become empty. As game progresses - different block-patterns are available.

You can train by toggling Time/Move limiters... and of course You can play without any of these constraints in normal difficulty as You wish :)

Your score is converted to credits - which You can use to replay levels.

Eoroid has several difficulty levels:

1. Normal

> Time and Moves limiters are toggleable
> You gain 1 credit for each 750 points scored
> Each stage has 8 levels

2. Hard

> Time and Moves limiters are always ON
> You gain 1 credit for each 2000 points scored
> Each stage has 12 levels
> More complicated levels than in normal difficulty
> Less moves / time than in normal difficulty

3. Nightmare

> Time and Moves limiters are always ON
> You gain 1 credit for each 3000 points scored
> Each stage has 15 levels
> Level grid is bigger than in normal/hard difficulty
> More complicated levels than in hard difficulty
> Less moves / time than in hard difficulty