1+1=？
Offers
- −50%$0.49View Offer
Trailers & screenshots
1 / 7
About 1+1=？
1+1=？ is a casual arithmetic game where you answer addition and multiplication questions alongside six anime girls with different personalities. Choose the correct option to win their hearts, and collect stickers to decorate your own short.
Answering questions
The questions grow more difficult from a gentle starting level, giving you room to practise arithmetic and take on greater challenges. Answer correctly in succession to trigger Heart-throbbing Mode, where every answer is treated as correct.
Frequently asked questions
The best price for 1+1=？ is $0.49 at Steam. It is the only shop with an offer that activates in your country.
The minimum requirements for 1+1=？ are: Windows 7, Intel Core i5, 1 GB RAM, 1 GB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. 1+1=？ is a single-player game.
Yes. 1+1=？ is the full base game. You need nothing else to play it.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.
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