The answer is:
Hot Cockles
Hot Cockles was one of several traditional games in which someone has to guess who has hit or touched them, and it also existed as a street and playground game, no doubt played more robustly there than in the Victorian drawing-room. Certainly, in mixed company, it allowed some mild flirtation. The game can claim some considerable antiquity, being referred to by name as early as 1549 and 1590, and an illustration from a 14th-century manuscript, printed by Strutt, appears to take the game back even further in time.