Suggestions: There should be a button to clear the chain in progress because you can box yourself into a dead end. A pause button would also be nice (maybe blank the screen when paused).
Game should probably be made a little easier so the intended strategy of chaining primes becomes more viable.
There are of course other strategies, but I'll leave that for others to discover. :D
I was initially unsure about how the blockers worked, that should be made more clear. For others, if you create a chain out of a prime count of numbers, you may clear blockers. If you create a chain out of a composite count of numbers, you may create blockers.
Interesting game, but it doesn't have that same "I know I can do better" feel that 2048 grabbed everyone with :)
The "click separate circle to start a new chain" seems a bit risky - when I play the game on my phone, dragging/swiping tends to skip numbers. I'll try implementing the "clear selection" button suggested by the other commenter first.
Here's an even longer version of the rules:
Click/tap numbers to connect them to a chain. You can only connect numbers that are at the left, right, top, bottom of the last selected number. As a faster alternative, you can also drag/swipe through the numbers.
When the sum of the chain ends in zero (ie. sum % 10 = 0) you get rewards and side effects depending on whether the chain's length is composite or prime.
- if it's composite (e.g. chain length is 4, 6, or 8 digits long), you gain 2 seconds on your time for each digit connected. However, each digit also gives you a 1 in 4 chance of replacing a digit in the grid with a "blocker", a cell that cannot be selected. - if it's prime (e.g. 2, 3, 5), you only gain 0.5 seconds for each digit, but instead of spawning blockers, each digit now has a 1 in 5 chance of removing a blocker in the grid.
Either way, the point value of the chain is ((sum / 10) ^ 3) * 5.
So connecting 1-2-3-4 gives you 5 points and 8 extra seconds but has 4 chances of spawning blockers. On the other hand, connecting 9-3-8 gives you 40 points, 1.5 extra seconds, and 3 chances to clear blockers.
Game ends when the time runs out. The goal is 1 million points, but the game will not stop you from playing when you reach that point.
There were a couple of big changes in the game since I posted that, though.
However, this seems less accessible.
