Is Game or Full-Screen mode not working?

Play in Fullscreen Mode
Other versions of this game:  Math Lines – Add 11

Info About Math Lines – Add 13

Imagine you’re staring at a simple board scattered with numbered balls, and your goal is to make them disappear by adding up to 13. That’s the core of Math Lines – Add 13, a casual puzzle shooter that’s easy to pick up but surprisingly addictive. You control a little cannon at the bottom of the screen that fires numbered balls one at a time. As those balls pile up toward the top, you have to be quick and accurate, aiming to pair new numbers with existing ones so their sum equals exactly 13. When you hit that magical total, they vanish, giving you precious breathing room—and bragging rights on the leaderboard.

What makes Math Lines stand out is how it blends simple arithmetic with timing and strategy. You’ll sometimes find yourself deciding whether to go for a quick match—like a 5 and an 8—just to keep things calm, or hold out for a bigger combo that clears more balls at once. Special power-up balls show up now and then, too, letting you clear entire rows or wipe out all balls of a certain value. That extra layer adds a dash of surprise and can pull you back from the brink of defeat if the numbers start climbing too fast.

As you play, the pace gradually ramps up, and you’ll feel the tension as the stack inches ever closer to the top. That’s when the real fun kicks in—balancing the pressure of a ticking timer with the precision of your next shot. There’s something satisfying about watching a cleverly placed 7 send a chain reaction through a row of 6s and 7s, all disappearing in a neat cascade. Before you know it, you’re hooked, chasing better scores and faster clears every round.

Whether you’ve got a couple minutes to kill while waiting for coffee or you’re in the mood for a brain-teaser marathon, Math Lines – Add 13 delivers. It’s light enough to play on the go, but its simple math challenge makes every session feel like a little workout for your brain. And hey, in a world of flashy graphics and complex controls, there’s something refreshing about a game that invites you to just point, shoot, and do some quick math.