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The project file of Kartu Plus Minus costs US$59. Use the "Buy project file" section on this page to pay online or order via WhatsApp; bundle discounts apply when you buy several games.

Cerdas Inovasi DigitalSoftware Developer ~ Custom ServicesTraining ~ Established since 1995

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Kartu Plus Minus

An integer card duel: bring your total as close to zero as you can and beat 8 computer rivals

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Kartu Plus Minus turns middle-school integer addition into an exciting card duel. Each round the player and the rival hold five cards valued +1 to +9 and −1 to −9, then take turns placing them on their own row or the rival row. Each total moves along a number line, and the smaller distance to zero wins. Eight computer rivals, from a warm-up cat to the Zero Dragon, get cleverer and carry special cards such as Table Swap and Twin. Players collect eight special cards, climb the ranks and return every day for the Daily Duel with the same deal for everyone. Ready to be rebranded as a campaign game for schools, tutoring centers or maths publishers. Try it right here below, then picture a game like this featuring your brand’s logo, characters and prizes.

Play It Now

Drag a card to your row or the rival row (or tap a card, then the row) · tap a special card to use it · 1–5 pick a card, ↑ rival row, ↓ your row, Q/W/E specials · P pause · M sound

Play Full Screen (best on phones)

Rotate your phone to landscape for the best experience.
Add to Home Screen from your browser menu for quick access.

Game Info

CategoryCard Game
ThemeJunior High
LanguageID · EN

Gallery

Ratings & Reviews

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Gameplay

8 tiered computer rivals with truly different play styles, from random guesses to weighing every possible rival hand
Eight original special cards (Neutralizer, Shield, Table Swap, Push, Sign Flip, Shrink, Peek, Twin) to collect and equip in your deck
A Daily Duel with the same deal for every player, a daily streak, and card backs unlocked through the streak
A live number line, result previews and sign-rule explanations taken from your own game; in-game How to Play, 1–3 stars and an online leaderboard

Production Quality

Original graphics, characters, music and sound effects created by our team
Plays instantly on phones, tablets and laptops with nothing to install, lightweight and smooth at 60 fps
Touch and keyboard controls, with high scores and progress saved on the device
Available in Indonesian and English

Order One for Your Brand

Swap the rivals, cards and arena backdrop for your mascot, products or brand palette
Ideal for school numeracy campaigns, daily challenges for learning communities and touch-screen activations at education fairs
Add online leaderboards, coupons or prizes, QR codes for events and visitor data forms
Fast turnaround from concept to launch, including setup on your website or app

Play Kartu Plus Minus Online for Free on Phone and Laptop

Kartu Plus Minus is a integer math card game you can play online for free right in your browser, with no download and no app to install. It runs smoothly on Android phones, iPhones, tablets, laptops and PCs, so it is perfect for a quick break at any time. The difficulty rises step by step, welcoming for beginners yet still challenging for experienced players. Kartu Plus Minus is developed by PT Cerdas Inovasi Digital, a game development studio in Indonesia, and can be customised for brand promotions, events and education.

Play Full Screen

Frequently Asked Questions about Kartu Plus Minus

Is Kartu Plus Minus free?

Yes. Kartu Plus Minus is free to play online in your browser, with no download and no sign-up needed.

Can I play Kartu Plus Minus on my phone?

Yes. It runs in the browser on phones, tablets and laptops. On a phone, use the full screen button and rotate to landscape if the game needs more room.

How do I play Kartu Plus Minus?

Drag a card to your row or the rival row (or tap a card, then the row) · tap a special card to use it · 1–5 pick a card, ↑ rival row, ↓ your row, Q/W/E specials · P pause · M sound

How many levels does Kartu Plus Minus have?

Kartu Plus Minus is built in progressive steps, with the difficulty rising as you play. Category: Card Game.

Can I order a version with my own brand?

Buy the Kartu Plus Minus Project Files

Get the full game to learn from, customise for your brand or publish on your own site.

Complete source code (HTML5 Canvas + JavaScript), no libraries or build step needed
All levels, graphics, music and sound effects included, ready to run in any modern browser
A short guide to changing texts, colours and difficulty and putting the game on your own website

Instant download after payment · secure checkout by PayPal · Buy 3+ games together and save up to 30%

Want a game like this for your brand?

We design and build custom games for event activations, booths, campaigns and education, complete with your logo, mascot, prizes and leaderboards. Besides web (HTML5), we can build it in the format you need: Unity, Unreal Engine, Godot, an Android/iOS app, a desktop (Windows/Mac) game, a touchscreen kiosk, WebGL 3D, or AR/VR. Tell us your idea and we will send a concept and quote.

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