Is this the 1987 arcade Contra or the Famicom version?
This route is labelled Arcade and covers Konami's original 1987 arcade release. The 1988 Famicom version has a separate page.
Konami's official series material identifies Contra as a 1987 arcade debut and highlights its mix of horizontal, vertical, overhead, and pseudo-3D presentation.
The arcade player exposes four action buttons in addition to movement, Select/Coin, and Start, matching the current browser key panel.
This route is labelled Arcade and covers Konami's original 1987 arcade release. The 1988 Famicom version has a separate page.
WASD controls movement, U/I/J/K map to Y/X/B/A, Shift maps to Select or Coin, and Enter maps to Start.
Open the play route, close the key panel, press Shift to insert a coin, and then press Enter to start.