I know it's hypocritical of me for posting up a set of rules when I've made a couple of mistakes in recent days.

But I'm actually grateful to those who challenged me on them. This is just basically a more draconian-looking reiteration of the rules in the first post (which won't be changing), but I hope it's good for discussion and reference in future scenarios. 2bi is an addition to the ruleset which may stop people entering to win by default; while also providing some slack for people who have been wanting to participate all along but couldn't post it up on time. It's only a quick draft so feel free to scrutinise.
1 All material in your entry must be entirely new, and made during the respective month, with exceptions for:
a) audio. This includes music and sound effects, but does not extend to any spoken dialogue. The files used must be freely available to the public.
b) templates. As above, they must be freely available to the public.
c) any other resources deemed acceptable by the host during the respective month, such as during a special RoN/OSD round.
2 You cannot enter or participate:
a) with any game started before the first day of the respective month, without exception.
b) with any game after the effective deadline of the respective month.
i) The
only exception is if the entrant has announced their participation
at least five days prior to the effective deadline, and
only if there is at least one other entrant to the competition.
c) if your game was created with anything other than AGS.
3 In the post announcing the game you wish to compete with, you must provide:
a) the full title of your game.
b) a tested and working download link.
i) You must ensure your download link remains active until the voting session has been declared over.
c) at least
one suitable screenshot.
i) The screenshot may be a title screen or in-game screenshot; providing the screenshot depicts your entry 'in-game'.
ii) This requirement does not apply to surplus screenshots.
4 You may edit your game:
a) at any time before the voting session.
b) only during the voting session to fix bugs.
5 You may work alone or in a team, providing you make clear you worked as a team in the latter case.
N.B: The effective deadline is the last day of the respective month or a modified date set by the host.