as probably mentioned many times before there are some games that you cannot say you have fully finished to review that take a good 100 hours at least to complete due to the sheer amount of side quests and additional content and so therefore you need to draw a line and say i will play up to this and evaluate how much this game has entertained me. this line could be on linear rpg's such as the FF series or call of duty could be to finish the storyline and maybe do a later review on any of the additional content.
however non linear rpg's (oblivion, fallout 3) you could set again the goal that you will complete the main storyline or if its a relatively short storyline say you will play up to say lvl 10 or 15 then review.
then some games cannot be completed since they are not story based or driven at all (see company of heroes) since they are mainly online and so you again have to set targets of again reaching lvl 10 or play certain amount of games then review.
this does not excuse however if a game plainly sucks and has no entertainment value as it has failed to do what it said on the tin and that is entertain and why should you subject yourself to this. granted there must be a minimun limit to this say 2-3 hours of game time since anything more could be torture and generate mindless boredom within you and set the mood for the rest of the game. as i found with FF13 due to the lack of having to do anything in combat (lost oddyssey nailed it by keeping to the original FF combat of turn based rather then this stupid flashy crap that seems to be infecting the final fantasy series as of late)
TLDNR
in a short sentence just set yourself a target for playing the game both minimun and maximun amounts and keep to these targets unless the game is either exceedingly great or shit.
edit
on zampella and game companies ofc they are going to try and discredit any game reviewers who say their game is shit because they want people to buy it and they will try anything to suceed in dissuading the general public from listening to these peoples particular opinions. i myself dont listen to most game reviewers and more rely on my own judgement and past experience of games like them and also look at user reviews since most reviewers i swear are paid by the company to say its good i mean look at how many reviews put MW2 in a good a light as opposed to bad and the same goes for bad company 2. i also listen to yahtzee a little bit by picking what he sees as shit and what his main gripe is then minimizing that and thinking about it overall. in other words if he rips the living day lights out of it then its a no go. if he moderately kills it then a maybe. if he cant find much wrong with it and resorts to old game gripe classics then its worth a good look
however non linear rpg's (oblivion, fallout 3) you could set again the goal that you will complete the main storyline or if its a relatively short storyline say you will play up to say lvl 10 or 15 then review.
then some games cannot be completed since they are not story based or driven at all (see company of heroes) since they are mainly online and so you again have to set targets of again reaching lvl 10 or play certain amount of games then review.
this does not excuse however if a game plainly sucks and has no entertainment value as it has failed to do what it said on the tin and that is entertain and why should you subject yourself to this. granted there must be a minimun limit to this say 2-3 hours of game time since anything more could be torture and generate mindless boredom within you and set the mood for the rest of the game. as i found with FF13 due to the lack of having to do anything in combat (lost oddyssey nailed it by keeping to the original FF combat of turn based rather then this stupid flashy crap that seems to be infecting the final fantasy series as of late)
TLDNR
in a short sentence just set yourself a target for playing the game both minimun and maximun amounts and keep to these targets unless the game is either exceedingly great or shit.
edit
on zampella and game companies ofc they are going to try and discredit any game reviewers who say their game is shit because they want people to buy it and they will try anything to suceed in dissuading the general public from listening to these peoples particular opinions. i myself dont listen to most game reviewers and more rely on my own judgement and past experience of games like them and also look at user reviews since most reviewers i swear are paid by the company to say its good i mean look at how many reviews put MW2 in a good a light as opposed to bad and the same goes for bad company 2. i also listen to yahtzee a little bit by picking what he sees as shit and what his main gripe is then minimizing that and thinking about it overall. in other words if he rips the living day lights out of it then its a no go. if he moderately kills it then a maybe. if he cant find much wrong with it and resorts to old game gripe classics then its worth a good look