Russian Federation were the first team to secure their involvement when FIFA chose to hand the hosting rights to the country, but 14 nations have since qualified.
As excitement continues to build ahead of the 2018 World Cup in Russia, FiFA Tuesday reported that more than 1.5 million tickets for the tornament have already been requested.
Tunisia are in the driving seat in Group A with a thee point cushion with one game remaining, but there remains an outside chance, albeit an unlikely one, they could be caught by DR Congo.
James McClean scored three minutes before the hour-mark to break the hearts of Chris Coleman's charges and send the Ireland into a seeded draw for the World Cup play-offs. While Poland followed on Sunday, Spain secured qualification on Friday.
Seeding matters in the draw and the top four ranked teams will be put in one pot against the four lower placed teams in FIFA's rankings. Sales phase 1 began on September 14 and lasts until October 12, when fans can apply for tickets. While Croatia and Ukraine struggle for second place should they beat Kosovo in Group I Iceland may become the first new country to qualify for their first ever World Cup on Monday night.
Iran were next on board in June, with Japan securing their place from Asia in late August.
The Final Draw will be held on December 1 in the Kremlin.
Ireland finished second in Group D while Wales were eliminated in third place. The initial leg in Syria ended in a draw and the leg will be performed on Tuesday, with the victor advancing to an intercontinental playoff against the fourth-placed team in the CONCACAF region.
North, Latin America qualifier: Costa Rica were Fifth Round runners-up as Mexico came out Fifth Round winners. The final spot will be determined between Panama, United States and Honduras.
The country selected 11 host cities to be the venues for the matches of the 2018 World Cup: Moscow, St. Petersburg, Sochi, Kazan, Saransk, Kaliningrad, Volgograd, Rostov-on-Don, Nizhny Novgorod, Yekaterinburg and Samara.