Low-stakes poker games are the next level of poker games in terms of betting limits, following micro-stakes games and below mid-stakes.
Poker Low Stakes Example:
Low-stakes online poker cash games are those ranging from $0.25/$0.50 to $0.50/$1.00. In live poker cash games, low-stakes games are those with higher limits, ranging from $1/$2 to $3/$6, which would be mid-stakes in online poker cash games.
As for tournaments, any MTT with a buy-in ranging from $20 to $50 can be considered a low-stakes game.