Oilcap (also known as Oilcap Pro) is a DOS puzzle game released in 1996 by Soleau Software. In this fast-paced game, players lay down pipe pieces to guide flowing oil across the board before it spills. With each level, the pace quickens and the puzzles become more complex, requiring quick thinking and strategy. Its addictive gameplay, crisp visuals, and increasing difficulty made it a standout among mid-’90s DOS puzzle titles.