Adder - a game of sums (now with promo codes)
Add, count up, and then sum! Adder is a calculator in reverse; highly addictive brain training in its purest form. From kids to math professors - Adder offers a thorough cerebral workout for everyone.
Flinging birds and slicing fruit may be all fun and games, but at the end of the day theres nothing quite as satisfying as putting two and two together¹. Enter Adder. Itll throw numbers at you and your task is to sum them up and provide the answer; a deceptively simple concept hiding surprising variation.
The viciously calculating game engine will adapt to your skill and gradually push you to your limits. Youll be so engrossed in your task that you may not even notice your brain inventing tricks and shortcuts to deal with the onslaught. However, the next time your dinner date leads with a Quick, whats 15863 + 10 + 2982 + 540? chances are youll surprise yourself with the speed at which youll be able to answer.²
Adder: on the plus side, its fun, healthy and educational - and if there was ever a game with nothing but plus sides, this is it!
Always challenging, never crushing
Adaptive difficulty ensures a fun game no matter how good or bad an adder you are.
Baby mode for the youngest adders
After all, the game was conceived by a four-year-old - shed better get to enjoy it.
Ridiculously detailed statistics
Some of it actually useful. For instance, do you know what time of the day your brain is at its sharpest? The answer might surprise you! (It sure did us.)
Achievements and global rankings
For the competitively inclined. For the collector. For the downright insane.
² real life example
Joined: Feb 2012