Full-time after extra time: Germany 2-1 Algeria
But it's too-little too-late as Africa's last representatives are eliminated fromt he competition.
30' - GOAL! Djabou pulls one back!
29' - GOAL! Ozil smashes home from close range, and Germany are through!
27' - CHANCE! Kramer with a shot on goal, but Mbolhi is there to save! The second ball is whipped back across the face of goal, but there's no-one there to convert!
25' - Schurrle with space down the right, but the Algerian defense block off his attempt on goal.
24' - Algeria with tired legs as they try, and try again, to break down a stubborn German backline.
22' - Germany taking the time, naturally, each time the ball goes out of play. Just eight minutes left.
20' - Slimani caught off-side, yet the crowd jeer loudly as they give their vocal backing to the African underdogs.
18' - Germany SUB: Schweinsteiger (OFF) for Kramer (ON).
16' - Philipp Lahm cautioned for a tug back on Brahimi. Algeria with a free-kick 35 yeards out, but it bounces just in front of Neuer who gathers.
15' - The Fennec Foxes get us underway. Can they find that elusive goal?
Half-Time in Extra-Time: Germany 1-0 Algeria. Africa's last hope have 15 minutes to find a goal.
13' - Germany still on the front foot. They have a corner, but there's no-one in the box as they pass back and keep possession.
11' - CLOSE! Mostefa with a snapshot from a corner, but it's narrowly wide!
9' - Algeria SUB: Djabou (ON) for Soudani (OFF)
9' - Muller with a strike from the edge of the box, but it's wide!
8' - Feghouli puts in a cross from the right, but it's too strong and goes out for a goal-kick.
6' - It's the skipper's last action as he is replaced by Bougherra for the African nation.
5' - Ozil with a solo run down the left, but skipper Halliche is there to block off the danger.
4' - Algeria on the back foot after conceding as Germany look to double their advantage and make sure of the result.
2' - GOAL! Muller puts in a ball for Schurrle to convert in front of the posts! Germany with the advantage!
1' - And Germany get us underway in the first half of extra time!
After 90 minutes: Germany 0-0 Algeria
94' - Mbohli safely gathers, and that's it! Into extra-time we go!
93' - Schurrle with a ball in from the right to win a German corner late-on.
92' - Goal-kick for Algeria as Schurrle can't reach a long ball down the right flank.
91' - Another German attack amounts to nothing as the frustration builds for the three-time champions.
90' - Four minutes of added time...
89' - CHANCE! Schweinsteiger heads straight at Mbolhi following a Philipp Lahm dink into the box!
88' - Neyer again off his line to clear the danger!
87' - Muller trips over the ball, and the free-kick amounts to nothing.
85' - Algeria clear, but the ball falls to Boateng, whose strike from range hits the arm of an Algerian player and it's a free-kick to Germany just outside the D.
83' - Ozil delivers in a ball from the left, but it's cut out for a corner.
81' - CHANCE! Muller shoots wide after beautifully controlling a perfectly-weighted ball into the box!
80' - ALgeria counter, but Neuer jumps up and catches the delivery into the box!
79' - CLOSE! Mbolhi with a fine stop as Muller heads goal-wards! Belkalem is there to block out Schurrle's follow-up effort! Algeria finally clear the danger away from the resulting corner!
78' - CHANCE! Muller with great work on the right, delivers for Schweinsteiger who headers wide!
77' - Algeria SUB: Taider (OFF) for Brahimi (ON)
75' - Slimani now with a goal-bound effort, but straight at Neuer!
74' - Feghouli with a volley, but its wide!
73' - Slimani fails to control after being put through on goal.
72' - Schurrle with a tame effort from the left and Mbolhi easily gathers.
71' - Neuer rushes off his line again to head away an Algerian long ball! Almost playing as a sweeper in this game!
70' - Twenty minutes for either side to find the breakthrough...
68' - Germany SUB: Mustafi (OFF) for Khedira (ON).
65' - Germany with a free-kick in the middle of the park, Kroos floats it in, but nothing comes from it as Algeria clear.
63' - Algeria put in a cross from the left, but Boateng is there to clear away any possible danger.
61' - Two successive corners for Germany are frantically headed away by the Algerian defense. Intense pressure from the European giants as they turn the screws here in Porto Alegre.
58' - Whistles and jeers from the crowd as Die Mannschaft pass the ball around in midfield. Cross comes in from the left, but its cleared. Schurrle tries from range, but it's high, wide and handsome.
57' - Germany attacking in waves now, yet still with no end-product.
54' - CLOSE! Lahm forces a diving save from Mbolhi with a shot from distance after neat build-up play from the Germans!
50' - End to end stuff as the corner is cleared and Algeria now break, but the German backline holds firm! Breathless opening to the second half!
49' - Algeria now with a corner, whhich Neuer initially spills but then quickly gathers. His quick release sends Schurrle off on his bike, and wins a corner.
47' - CLOSE! A German corner is taken short, but the cross is delievered in and Kroos heads his effort straight at Mbohli!
46' - 43 games since Germany were last held to a goalless draw at a World Cup! They're unbeaten in their last 14 internationals, so expect them to pile on the pressure in the second period.
45' - And we're underway!
German half-time substitute: Schurrle (ON) for Gotze (OFF)
Half-Time: Germany 0-0 Algeria
And the referee blows his whistle to end the first half. Chances at both ends, but Mbolhi the busier of the two keepers.
45' - One minute to be added on...
44' - Germany ending the half the stronger of the two sides as they pile the pressure on the Algerian goal.
43' - CLOSE! Kroos with a left-footed strike from outside the box that flies narrowly wide!
42' - Halliche is first to go in the referee's book for a rash challenge in midfield.
40' - CHANCE! At the other end, double save from Mbolhi as he denies Kroos and then Gotze's follow-up effort!
38' - CHANCE! A long throw for Algeria falls at the feet of Mostefa, whose powerful effort is deflected out for a corner!
37' - Ozil with a swerving shot from range, which Mbolhi spills, but it's evetually dealt with by the Fennec Foxes.
36' - The Germans passing the ball around in midfield, trying to find a way through the resilient Algerian defense.
34' - CHANCE! Mustafi finds Muller with a low cross, but Germany's top-scorer at this year's World Cup headers wide!
32' - Algeria with a free kick on the left side of the German box. Feghouli takes, but its over the bar!
31' - Ozil's shot on goal is blocked after a neat cut-back from Philipp Lahm.
30' - Still goalless after half an hour in Porto Alegre.
27' - Neuer again rushes off his line to clear away the danger from an on-coming Feghouli!
26' - Germans forced to pass back to Neuer after some good pressure from the Algerians in midfield.
25' - Africa's highest-ranked team at this year's Mundial holding their own against the European heavyweights...
23' - Mbolhi tips an Ozil chip over his goalposts for a German corner. The resulting set-piece is hoofed clear by the Algerian defense.
22' - Muller heads a difficult effort over the crossbar. He applaudes the cross.
21' - Germany have sent five of their substitutes out to warm up. Hmm...
20' - Neutrals in the stadium definitely behind the Fennec Foxes as they cheer loudly when Germany lose the ball.
18' - CLOSE! Ghoulam with a fizzing strike across the face of Neuer's goal after some good work down the left! Best chance of the half!
16' - CHANCE! Algeria find the back of the net through a diving Slimani header, but it's offside!
14' - Sofiane Feghouli with a chance at the other end, wriggling his way through the German defense, but his effort from a difficult angle is wide.
13' - CHANCE! Bastein Schweinsteiger with a venomous shot from range that stings the palms of Mbolhi!
10' - Loud roar from the crowd again as Slimani sets off once again, but this time the GErman defence holds firm as Mertesacker sticks out a foot. Slimani signalling his intent and showing off his pace early on.
8' - CHANCE! Neuer comes racing off his line and tackles the on-rushing Islam Slimani way outside the box with an open goal left behind him! Concedes a corner, which is easily dealt with. The Bayern shot-stopper was lucky there...
6' - Mustafi drills in a ball from the right, but again Mbolhi is there to snuff out the danger.
4' - Lahm tries to thread a ball through for Muller, but Algerian keeper Rais Mbolhi races off his line to collect.
3' - Early touch for Manuel Neuer who collects an Algerian long-ball forward.
2' - Germany with the majority of the possession in the early satges. Mustafi caught off-side on the right.
1' - And the Brazilian official gets us underway! Germany in their white strip, Algeria in green.
The anthems are being belted out at the Estadio Beira-Rio in Porto Alegre...
Germany topped Group G with two wins and a draw, their only blemish a 2-2 draw with African giants Ghana. Algeria qualified second from Group H with one win, one draw and a loss, hanging on for a point in their final fixture against Russia to seal progress to the Last 16 for the first time in their history.
Germany are gunning for their 13th World Cup quarter-final appearance, but have history against them, having never beaten the Fennec Foxes - they lost against the Algerians in a friendly in 1964, while again suffering a defeat to the African nation in their World Cup group stage encounter in 1982.
Borussia Dortmund defender Mats Hummels is the only player unavailable from either side due to flu, while fellow defender Benedikt Howedes is the only player in either starting eleven to be sitting on a yellow card.
The team line-ups have been announced:
Germany XI: Neuer, Howedes, Schweinsteiger, Ozil, Muller, Lahm (c), Mertesacker, Kroos, Gotze, Boateng, Mustafi
Algeria XI: Mbolhi, Ghoulam, Belkalem, Halliche (c), Lacen, Feghouli, Slimani, Soudani, Taider, Mandi, Mostefa