Jewel Blaster

Jewel Blaster asks you to clear jewels by matching three or more of one colour, which removes them and adds to your score. The larger numbers come from combos and chain reactions, and the developer frames the whole game around reaching the highest score you can.

Levels change the terms as you progress. Each one brings its own objectives and obstacles, and one kind of goal involves clearing a set number of gems. The obstacles themselves are not described, so each new one is something to work out on the board. There is a pause button and a restart button in the in-game menu, which helps if a level opens badly and you would rather start it again than play it out.

On a computer you play with the mouse, and on phones and tablets with taps.

Click a jewel with the mouse, or tap it on a touch screen, to pick it and move it. The developer says that, depending on the situation, you either drag and drop a jewel or tap to swap it. Each move should leave three or more jewels of a single colour together, which blasts them away. Complete the level's objective to carry on.

Combos and chain reactions are the source of the bigger scores, so a move that starts a chain beats a lone match. Read each level's objective before playing, because some ask for a particular number of gems rather than points. If the first few moves go wrong, the restart button in the menu lets you begin again.

Score-focused match-3 in a landscape frame (800 by 600). The developer lists mouse play on desktop and taps on mobile and tablet. Pause and restart are in the in-game menu. No level count is given.

Crystal Diamond also asks for lines of three or more matching pieces with power-ups as levels get harder, and Gem Legends turns matches of four or five into special power gems.