Biderka · A collection of number games
Biderka: multiplication puzzles
Think · Multiply · Overcome
Biderka is a number roguelike built around multiplication. Two different games, one idea: think before you move. Free to start, no ads and no subscription.
Two games
Faktore Build the product
You get a board of digits and three products to make. Chain neighbouring digits, diagonals included, and multiply them: if the result is one of the products, the move counts. The whole calculation stays on screen while you build it. Every move in a row raises the combo, and the combo is your multiplier.
Bide Choose your path
You leave the entrance with a value and climb a network of multipliers towards a target. Each node shows the result you would get: you don't calculate, you decide. The nodes you step on are spent, and choosing the short target or the long one is the whole strategy.
Runs that change every time
- Nine rounds per run, with a boss in the third, sixth and ninth. Each boss changes a rule.
- Between rounds you pick relics with the coins you earn in the run: 23 in Faktore and 25 in Bide. They combine with each other and never cost real money.
- Four difficulties in each game, from Easy to Expert, and a new challenge every week.
- Progress and statistics for everything you play.
Take a look
Made for relaxed play
- Interactive tutorial in each game.
- Works fully offline.
- In English and Spanish, with light and dark themes.
- Sound and vibration adjustable separately.
Free to start, one payment for everything
Start for free with the tutorial and the first three rounds on Easy in each game, boss included. Biderka Complete unlocks, with a single payment, all nine rounds and all four difficulties in both games, the weekly challenges and the cloud backup of your progress.
No ads. No subscription. No lives. No pay to win. Your statistics are never paywalled.
Your progress, on any phone
With Biderka Complete you can switch on a cloud backup in Settings. It gives you a code, and with that code you recover your progress on another phone, even from Android to iPhone. No accounts, no email. How it works and what is stored, in the privacy policy.
What's new
What changes in each version. You also have it inside the game, in Settings, under “About”.
Version 1.0.0 · the first one
- First version of Biderka: Faktore and Bide, two multiplication puzzles with nine rounds, three bosses and relics in every run.
- Four difficulties in each game and a new challenge every week.
- Progress and statistics for everything you play.
- Cloud backup with Biderka Complete: move your progress to another phone with a code, even from Android to iPhone.
- In English and Spanish, with light and dark themes, and no ads.
Questions?
How to play, frequently asked questions and how to write to us, in support.