How to enter speculator mode ?

[MunchkinXQ]

Any possible way to see all the games in progress ?

[h_illes]

For a specific game, yes: https://boardgamearena.com/gametables?game=1480&all - you can also reach this from the game's homepage via an 'eye' button near the top (the exact position somewhat depends on your device).

For all games, no, but it would be pointless anyway (too many games total).