Sentinel

Player notes

About this game

Sentinel is Leonard Yeo's arcade-style android demo. The original README describes scrolling scenery, small enemies and three larger opponents. This entry runs that included demo, with its original program and data; it does not add levels from a separate release.

Use the numeric keypad: 4 and 6 move left and right, 8 jumps straight up, and 7 or 9 jump diagonally. Space fires. Walk over ammunition and power-ups to collect them. Contact with an enemy drains energy, while shooting consumes ammunition, so a safe jump can sometimes be preferable to spending more shots.

Some doors and trapdoors depend on switches you activate by walking over them. To use a teleporter lift, stand on its upward-arrow symbol and press keypad 8. The manual advises keeping on the move when facing the larger enemies. Start by practising the separate straight and diagonal jumps in the opening area, then watch the energy and ammunition displays while advancing.