This game can keep you occupied for hours.

I wrote it in an afternoon, and tested it fairly successfully on the baby sitter so I think it works OK.

There are 6 levels of difficulty from 1 (really very stupid indeed) to 6 (if you're not careful, you could lose)

I would consider programming in more levels if the demand is there.

It's Open source, so click ALT + F11 to look at the VBA code. This is a great example of what you can do in a simple Excel Spreadsheet.

Training Video on 4 in a row:

Download Free Spreadsheet below

IMPORTANT: This workbook contains VBA macros. If you're worried about SECURITY, open Excel in SAFE MODE first to view the code. If you're happy, then open Excel normally.