2. Not enough things to spend money on
This is another thing that Sleeping Dogs put me in mind of, because in the second half of the story campaign my various exploits had left me with several hundred grand in the bank and nothing to spend it on. Except new cars to be stored in my garage, but take a look around, guys, there are cars everywhere. Far more than there are garages. Or police officers who might catch you nicking one. Throwing money at you is supposed to be a gameplay incentive, but once you've got more than you could ever reasonably need, that incentive disappears, and the game starts to get boring.
Then there are games like the aforesaid Assassin's Creed 2 and GTA: Vice City where you can use your money to buy property, but this usually only has the effect of increasing your income, trapping you in this economic loop in which you essentially attempt to use a firehose to hold back the tide. When you get right down to it, a player of a game can only be effectively rewarded with gameplay. With fun. And money's fine as long as there are fun things in the in-game store to spend that money on, like tiger costumes and, just off the top of my head, jetpacks, but otherwise it's just passing the buck.
If No More Heroes had had a decent variety of stuff to do in its sandbox map I would've given it at least two more gold stars, because I actually liked the mechanic in that game where you had to pay huge sums of money to do the next story mission. That's a perfect example of simultaneously organic and structured gameplay. As is the start of Morrowind when you're told to basically do whatever the fuck you like to reach a certain level of wealth and competence before you get any more story missions. This is incentivising the player to actually sandbox it up in the sandbox, to experiment and explore and find their own level of fun. As opposed to the kind of sandbox where the vast majority of it exists only as a needlessly elaborate corridor separating one story mission from the next.
So money by itself isn't a reward. But if Sleeping Dogs had demanded I use that money to, say, buy a certain car before I could do the next story mission, or if purchasing properties in AC2 unlocked additional quests related to those properties, then those would be rewards that would actually motivate me, because I'm being provided with more gameplay.
I've just thought of something. What if you did the standard sandbox crime game thing for the first half of the game, gradually acquiring more and more money, luxury apartments, fancy clothes and powerful vehicles, but then at the start of the second half your character falls for some dastardly trick and the villain steals everything you have? That'd raise the stakes for the final act, wouldn't it. It'd make it easy to hate the bad guy 'cos it's taking something away from both the player character and the player, and their eventual defeat would be all the more satisfying. There I would stand on the edge of a tall building, watching Count Von Bastard plummet to his splatter death, before taking a drag on a cigarette and muttering to no-one in particular that this is what happens when you get between a man and his jetpack.
Yahtzee is a British-born, currently Australian-based writer and gamer with a sweet hat and a chip on his shoulder. When he isn't talking very fast into a headset mic he also designs freeware adventure games. His personal site is www.fullyramblomatic.com.