Card game · 2 to 6 players · 8+ years · 20 min

TWEAK! Sums, action cards and plenty of laughs

A dynamic card game that tests your mental agility. Combine cards to reach the Target Sum, which changes every turn, and use the TWEAK! [T!] cards to give the game unexpected twists.

Buy TWEAK! at CEFA Toys See the rules

What is TWEAK!?

TWEAK! is a fast-paced, fun card game that puts players' mental agility to the test.

The goal is to create card combinations that add up to a changing Target Sum each turn. But it's not just about adding… the special TWEAK! cards [T!] bring unexpected twists that turn every round into a true strategic challenge to score as many points as possible!

Designed to play with family or friends, TWEAK! is easy to learn, fast to play, and highly addictive. With just one deck, you get a universe of possibilities where math, strategy, and fun come together.

Editions

Two editions, one game

TWEAK! has had two lives. The first, published by Ludiversia in three box sizes, is sold out. The second, expanded to 72 cards, is published and distributed by CEFA Toys in Spain and Portugal.

Sold out

1st edition. Ludiversia

65 cards. Three box sizes (S, M and L) and an expansion with direct-scoring cards, Luck or death and the 7/10 final target card.

See the 1st edition

On sale

2nd edition. CEFA Toys

72 cards: 54 number cards, 17 [T!] action cards and the blue final Target Sum card. Revised rules, tutorial video and official website at tweakcards.com.

See the 2nd edition

Who is TWEAK! for?

TWEAK! was created for anyone who loves to play, learn, and connect:

Families who want to have fun together while keeping their minds active
Kids aged 8 and up who learn math naturally and effortlessly
Groups of friends looking for a quick, surprising game that's easy to take anywhere
Teachers and educators searching for the perfect educational tool for the classroom or workshops
Other professionals who want to work on cognitive skills through play

TWEAK! as an Educational Tool

Beyond being a game, TWEAK! is a powerful educational tool that helps develop:

It has been successfully tested by families and education professionals as a game that motivates and engages both number lovers and those who never enjoyed math.

Why is TWEAK! so addictive?

TWEAK! brings the best of classic card games, but with its own unique twist:

Key Feature	Why It Matters
Easy-to-learn rules	Anyone can start playing after just 3 minutes of explanation
Quick rounds (20-25 min)	Perfect for after-meal fun or travel time
Fun mental math	You learn without noticing, by playing and competing
Surprise effect cards	You never know what's coming… How exciting!
Strategy + memory	It's not just luck: the smartest player scores the most
Endless replayability	No two games are ever the same
Compact format	Fits in any backpack or bag

A Premium Quality Product

TWEAK! stands out not only for its game design, but also for the quality of its materials:

Durable, professional-grade cards: Made with triple-layer Black Core cardstock (300 gsm) and linen finish, ensuring full opacity, high resistance to bending, and excellent durability, even after many games.
Anti-glare linen texture: Enhances feel, reduces glare, and makes shuffling easier.
Clear, colorful, and appealing design: Created to provide a visually engaging experience.
Compact, elegant boxes: Three textured formats tailored to different needs. Easy to store and carry.
Responsible manufacturing: Made with sustainable and non-toxic materials.

Ready to make a TWEAK!?

The 2nd edition of TWEAK! is distributed in Spain and Portugal by CEFA Toys. The full rules, the tutorial video and the FAQ are on the game's official website.

Buy TWEAK! at CEFA Toys tweakcards.com