Sum Thread

Trace a path through a grid of digits so the numbers under your thumb add up to the target — exactly. Hit it and the thread burns away and the target climbs, with the next three targets shown so you can plan ahead. Miss and the thread breaks and your streak resets.

• Trace a path and sum the digits under it
• Rare gold cells double, violet cells subtract
• Daily is one board for everyone that day; Blitz races a 90-second clock

Endless, plus a seeded Daily board and a 90-second Blitz sprint.

Sum Thread is part of Tethered Rifts — 14 handmade mobile games that share one account and one wallet. Play straight away as a guest; sign in later and your progress follows you.