Count Up vs 8! Challenge

Challenge your mind with the addictive math puzzle that makes arithmetic fun! Combine number tiles and operators to reach target totals while unlocking achievements and improving your mental math skills. *** Why CountUp? *** • Boost mental arithmetic and problem-solving skills • Master addition, subtraction, multiplication, and division • Perfect for students, teachers, and math enthusiasts • No time pressure - think at your own pace • Completely offline - play anywhere, anytime • Suitable for all ages - from elementary school to adults *** How To Play *** Select number tiles and operators to build equations that reach the target total. Remember: it's a running calculation, so 4 + 5 × 6 equals (4 + 5) × 6 = 54. Find multiple solutions to unlock achievements and complete each grid. Your progress is automatically saved! *** 9 Exciting Achievements *** • "Solved": Reach the target • "Five Ways": Find 5+ unique solutions • "Three": Use only 3 tiles maximum • "Even/Odd": Use even or odd number of tiles • "Divide & Conquer": Include division in your solution • "Smooth Operators": Use all four operators • "Stay Positive": Solve without subtraction • "10+": Use only double-digit tiles *** Multiple Grid Sizes *** Start small or jump into bigger challenges: • 3×3 (9 tiles) - Perfect for beginners • 4×3 (12 tiles) - Step up the challenge • 4×4 (16 tiles) - For serious puzzlers • 5×4 (20 tiles) - Ultimate brain workout *** Features *** • Clean, intuitive interface • Progress tracking and statistics • Share your grids with friends • Regular updates and improvements Download now and start sharpening your math skills with this engaging puzzle game!

Fill a 4x4 board with dice. Whenever a row or column adds up to exactly 8, it clears. That's the whole rule. Staying alive is the hard part. Each turn you get a die (sometimes a double) and choose where to drop it. Every placement changes what the rows and columns add up to, so one careless move can lock the board up fast. Think a few steps ahead, set up chains, and keep cells open for whatever comes next. HOW TO PLAY • Drag the die from the stand onto any empty cell • A row or column that totals 8 clears and scores • Double dice take two cells at once, so place them with care • The game ends when the board is full and nothing adds up POWER-UPS Running out of room? Spend the coins you earn from each game on three tools: • Hammer: knock a single die off the board • Bomb: clear a 3x3 area in one go • Trash: throw away a die you don't want WHY PEOPLE KEEP PLAYING • Quick rounds that fit into a coffee break, or long runs when you're chasing a best score • Simple arithmetic that still makes you think, a nice little workout for your brain • One-handed play, no timer, no pressure • Works offline, so it's good for commutes and flights • A short tutorial gets you going in under a minute 8! Challenge is free to play and supported by ads.