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  • Publisher: Nicola Salmoria
  • Genre: Puzzle
  • Device: iPhone
  • Size: 2.9 MB
  • Version: 1.1
  • Price: $1.99
  • Average User Rating:
    Not enough votes.
App description: "Twin Beams absolutely joins the list of Best Puzzle Apps of 2012." - Tom Cutrofello, gottasolveit.blogspot.com

Twin Beams is a game of logic and observation. The logic reasoning required is surprisingly varied.

Customer reviews:
"No add-on packs to buy, no ads, just 10,000 well-crafted puzzles. Highly recommended!"
"One of the very best logic puzzles in the store - I promise!"
"Very challenging."
"Easy to pick up and quickly play a couple of puzzles."
"Well thought out and intuitive."

Each grid has a single solution. Place laser emitters on the grid, such that there are exactly two emitters in every row, column, and coloured area. Emitters must not touch each other.

The paper & pencil version of this puzzle is known as:
Star Battle, or Stars, in the USA and UK;
Doppelstern in Germany;
Alberi, or Sentinelle, in Italy.

4 difficulty levels, from novice to expert.
2,500 top quality grids for each difficulty level (10,000 total).
Illegal moves are automatically excluded, letting you focus on the logic reasoning.
Unlimited undo/redo.
Statistics about the number of grids solved, best and average times, and total play time.

Nicola Salmoria's comments:

Tutorial/Gameplay videos:

Youtube link | Pop Up

Youtube link | Pop Up
07-12-2012, 07:15 PM

I'm the developer of Twin Beams, an implementation of a great but little known logic puzzle, published in magazines with names like "Battle Stars" or "Alberi" (in Italy).

It is vaguely similar to Sudoku, but has no numbers! The puzzle is entirely visual, and requires good logic abilities and observation skills.

I think it's fair to say that if you like Sudoku, you'll love Twin Beams. If you don't like Sudoku--or you are (rightfully) bored of it--Twin Beams could be a pleasant surprise.

The game features no less than 10,000 grids, divided in four difficulty levels, going from easy grids that can be solved in less 20 seconds, to expert grids that can require an hour of serious thinking.

Here are some promo codes--quick, a few of them are about to expire!