Tigs Off Ground is another variation of tigs (or "tag" if you're an unconscionable weirdo). As its name suggests, it follows the usual rules of tig. One person is the protagonist - or "it" - and must tig someone else to pass it on. The wrinkle in the game is provided by the fact that "it" can't tig anyone who is "off ground." Typically, this means that the player must seek somewhere not directly on the playground surface to stand - such as a bench or plant pot - or by hanging from railings or a gate.
In most games, "it" is prevented from merely waiting for his chosen target to get down by the rule "no guardian angels." This prohibits "it" from waiting, and he must leave someone who has successfully gotten themselves off ground and pursue someone else instead.