You need Java support to run Cobra applet.

Cobra 2.2
(c) 2000 by ESW

Game Instructions

Game tab:
 New button or <Enter> key: starts a new game.
 L button or <Left> key: move Cobra to left.
 U button or <Up> key: move Cobra to up.
 D button or <Down> key: move Cobra to down.
 R button or <Right> key: move Cobra to right.
 Pause/Run button or <Esc> key: pauses or restarts Cobra.
 Game field: touch the pen or click mouse on the game field
  to move Cobra to any direction
Options tab:
 Sound:
  End of Game: sets end of game sound on or off.
 Skill level:
  Beginner: sets beginner game skill level.
  Intermediate: sets intermediate game skill level.
  Expert: sets expert game skill level.
 Up/Down keys turn Left/Right:
  Turn on: maps <Up> and <Down> keys to turn the
   Cobra movement to left or right. (for palm users
   enables single hand game playing)
  Inverted: inverts <Up> and <Down> keys mapping to
   right and left Cobra turn. (for palm users enables
   comfortable single hand game playing when cursor
   keys are on device left side)
Scores tab:
 Reset button: resets scores.
About tab:
 Shows game version information.