PlayOJO currently has three offers: 80 Free Spins - No Wagering and 50 Free Spins (direct sign-up welcome offer) for new players, and OJOplus, a cashback offer, for existing players. The key terms for each are in the cards above. T&Cs apply.
How the current offers work

The two new-player offers are both spins offers, and both are listed without a wagering requirement. The welcome offer, 80 Free Spins - No Wagering, gives 80 spins with No wagering (winnings paid as cash), needs a minimum deposit of £10 and applies to Big Bass Bonanza. T&Cs apply. The welcome bonus page goes through it in more detail.
In practice, no wagering means winnings from the spins are not locked behind a playthrough, which is the part of most casino bonuses that catches players out. It does not remove the other conditions, and an offer with no wagering still has terms on eligible games and on what you must do to qualify.
50 Free Spins (direct sign-up welcome offer) is also for new players and is listed with No wagering. It is a separate offer from the welcome offer, so the two should not be read as one package; see its card above for the key terms. T&Cs apply.
OJOplus is different in kind. It is for players who already have an account, it is a cashback offer and it is listed with No wagering. It is not a welcome offer, so it is not something to look for when you sign up. See its card above for the key terms. T&Cs apply. The cashback page explains how this type of offer works.
A quick way to compare offers is to take the same four questions to each card: whether there is wagering, whether a minimum deposit applies, which games count and how long the offer is valid. On the cards above, all three offers are listed without a wagering requirement, so the difference between them lies in who can take them, the minimum deposit where one applies and the eligible games, not in a playthrough. Put side by side, that makes the choice a question of which games you want to play and whether you are a new or an existing player. It is also worth asking whether you would play the eligible game anyway; if the answer is no, the offer is not a good fit however it is worded. For how the free spins type works in general, see the free spins page.
18+ · T&Cs apply
What can cost you an offer

Most lost offers come from skipping the terms. Start with the eligible game. The welcome offer applies to Big Bass Bonanza, so spins cannot be used on a different slot. If you play something else expecting it to count, it will not.
Check the minimum deposit next. The welcome offer needs £10. Read the full terms before you pay anything in. See how deposits work for the payment side.
Do not assume that two offers add together. Each has its own terms, so read them separately and do not assume that conditions from one apply to another.
Finally, read the full terms and conditions before you deposit, not afterwards. A summary on a review site, including this one, is a guide to what to look for and not a replacement for the terms. T&Cs apply to every offer here.
Which offer suits whom

For a new player, the welcome offer is the more straightforward to understand: a set number of spins, no wagering and one eligible game. It suits someone who likes that game and is happy to make the minimum deposit. If you do not want to play it, the offer has little to give you, and you should skip it rather than change what you play to fit the bonus.
The direct sign-up offer suits a new player who wants a spins offer and reads its terms first. Check its full terms before you decide, since its conditions sit apart from the welcome offer's.
OJOplus suits existing players who already play at PlayOJO and want a cashback offer. It is not a reason to sign up or to deposit more.
Whatever you choose, a deposit is your own money and should be an amount you can afford to lose. An offer does not make gambling free of cost, and it is no reason to play for longer than you planned.
