Croteam have just officially announced Serious Sam 4 on the latest Humble weekly sale. Croteam has also stated on the page that "All funds to Croteam will go towards making the upcoming Serious Sam 4 the craziest and greatest Serious Sam game EVER". They even gave a piece of artwork (see above) for us to look at which, at the very bottom right, tells us the project is being aimed to be released at some point next year.

No more information is known other than that, but we assume we'll be hearing more about it at some point soon. If we're lucky, there could even be some news about it at E3 in the form of a teaser. Are you guys excited for a new old school Serious Sam game?