With an air of unease hanging over the tournament, the African Cup of Nations soccer competition returns to Gabon for the second time in five years.

Opposition parties in the oil-rich central African nation have stated their intention to use African soccer’s biggest show as an opportunity to express their grievances against Gabon President Ali Bongo Ondimba, who retained power in a tense election last August that led to about 100 deaths on the streets, according to opposition claims.

That gives African soccer organisers, who chose to go back to former co-host Gabon as a replacement for Libya, even more to contend with alongside shaky infrastructure and two largely untested new stadiums.

Libreville, the capital city of palm tree-lined Atlantic Ocean beaches and French colonial villas, and Franceville, deep inland in the jungle and the last stop on the railway line that cuts across the country, staged games when Gabon co-hosted with Equatorial Guinea in 2012. Now, Gabon gets the 16-team, 23-day tournament all to itself, bringing in two new venues that have barely seen any kind of soccer before, let alone a top international championship involving European league superstars.

Oyem, a town in the far north surrounded by rubber plantations, will be home to defending champion Ivory Coast for the group stage. Hopefully for Manchester United defender Eric Bailly and teammates, they’ll be in one of only a few hotels listed with the luxury of hot water.

Port-Gentil, the southern centre of Gabon’s oil industry, is the second new city. Both have stadiums that were being built right up to deadline and not many have set eyes on the finished, or possibly unfinished, products.

The African Cup always has vibrant colour, fans painted head to toe and in an array of wacky outfits, and competing countries you’re unlikely to ever see at the World Cup, even when it’s expanded: Guinea-Bissau qualified this year, their first appearance at a major tournament and the first time they have really come anywhere close to the big time.

But the African championship is also an event that flirts with calamity. Two years ago at the tournament in nearby Equatorial Guinea, there were brawls between players on the field and riots in the stands when security forces waded in among supporters wielding batons and an army helicopter hovered so dangerously low in the stadium that its rotors whipped up debris and scattered the spectators.

This year, observers wonder how the Gabonese security forces will react if there are angry protests against Bongo, who succeeded his father as president and whose family has ruled Gabon since the 1960s.

In Africa, there are other problems to contend with, too: In 2012, Ghana captain Asamoah Gyan contracted malaria, luckily a mild strain, in Franceville. He recovered and played a couple of days later.

This is a soccer event like no other, and comes around more often than the others, with the Confederation of African Football still bucking the trend of other major tournaments and staging its showpiece every two years, not every four.

Among the title contenders over the next three weeks – kickoff is on Saturday and the final is on February 5 – Ivory Coast are striving for the rare achievement of back-to-back African titles after the team finally ended a long drought two years ago. There are two significant absences for the Ivorians this time, though, with powerful midfielder Yaya Toure, their driving force last time, retired from international soccer and victorious coach Herve Renard now in charge of group opponent Morocco.